If you dream up a plan or idea, you work it out or create it in your mind.
I dreamed up a plan to solve both problems at once...
His son hadn’t dreamed it up.
PHRASAL VERB : V P n (not pron) , V n P
If you dream up a plan or idea, you work it out or create it in your mind.
I dreamed up a plan to solve both problems at once...
His son hadn’t dreamed it up.
PHRASAL VERB : V P n (not pron) , V n P
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006